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Microsoft Internet Information Services (IIS) 5.1 on Windows XP Professional SP2 contains a flaw in URL parsing. A remote attacker can send crafted HTTP requests targeting a path ending in ".dll" followed by arguments such as "~0" through "~9" (for example, "/_vti_bin/.dll/*/~0"). This input causes ntdll.dll to return a value that IIS does not correctly handle, leading to memory corruption or other unsafe processing conditions. The issue was initially believed to cause only a denial of service, but the CVE description states that arbitrary code execution is possible.
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What an attacker gets, and what they’ve been doing with it.
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Patch, then assume compromise.
No valid public exploits. Mallory filtered out 2 candidates as fakes, detection scripts, or README-only repos.
All candidate exploits were filtered out by Mallory's validation.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
2 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
An information disclosure issue in Microsoft IIS that allows enumeration of 8.3 short file and folder names via crafted requests containing the tilde (~) character and wildcards, potentially exposing otherwise hidden resources.
An IIS information disclosure issue where requests using the tilde (~) and wildcard patterns can reveal 8.3 short file and folder names on Windows-hosted web applications, aiding file and directory enumeration.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.